402-71-1 Usage
Description
TPCK (402-71-1) is an irreversible inhibitor of the serine protease chymotrypsin.1 It also inhibits certain cysteine proteases (bromelain, ficin, papain).1 TPCK inhibited (IC50 = 5 μM) the mitogen-induced activation of pp70s6k, a mitogen-regulated serine/threonine kinase involved in the G1 to S phase transition of the cell cycle.2
Chemical Properties
white crystalline powder
Uses
Different sources of media describe the Uses of 402-71-1 differently. You can refer to the following data:
1. N-α-Tosyl-L-phenylalanylchloromethane is a proteinase inhibitors with apoptotic function. Studies have shown that it induces caspase-dependent apoptosis in Epstein-Barr virus (EBV)-transformed human B
cell lines with release of pro-apoptotic proteins from mitochondria. It also results in down-regulation of the anti-apoptotic proteins and caspase-dependent cleavage of two anti-apoptotic proteins. I
t promotes dephosphorylation of p53 on serine residues.
2. N-α-Tosyl-L-phenylalanylchloromethane is a proteinase inhibitors with apoptotic function. Studies have shown that it induces caspase-dependent apoptosis in Epstein-Barr virus (EBV)-transformed human B cell lines with release of pro-apoptotic proteins from mitochondria. It also results in down-regulation of the anti-apoptotic proteins and caspase-dependent cleavage of two anti-apoptotic proteins. It promotes dephosphorylation of p53 on serine residues.
Definition
ChEBI: The N-tosyl derivative of L-phenylalanyl chloromethyl ketone.
Biochem/physiol Actions
Blocks the LPS- or cytokine-induced activation of nuclear factor κB (NFκB), which, in turn, blocks the induction of iNOS and COX-2 transcription. Blocks activation of pp70s6k by all mitogens. Blocks apoptosis cell lines by inhibiting the processing of caspases in some cell lines and to some stimuli. Also blocks apoptosis initiated by Taxol (in MCF-7 human breast carcinoma cells).
Safety Profile
Experimental
reproductive effects. A flammable liquid.
When heated to decomposition it emits
toxic fumes of NOx, SOx, and Cl-.
References
1) Bond and Butler, (1987) Intracellular proteases; Annu. Rev. Biochem., 56 333
2) Grammer and Blenis (1996) The serine protease inhibitors, tosylphenylalanine chloromethylketone and tosyllysine chloromethylketone, potently inhibit pp70s6k activation; J. Biol. Chem., 271 23650
Check Digit Verification of cas no
The CAS Registry Mumber 402-71-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,0 and 2 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 402-71:
(5*4)+(4*0)+(3*2)+(2*7)+(1*1)=41
41 % 10 = 1
So 402-71-1 is a valid CAS Registry Number.
InChI:InChI=1/C17H18ClNO3S/c1-13-7-9-15(10-8-13)23(21,22)19-16(17(20)12-18)11-14-5-3-2-4-6-14/h2-10,16,19H,11-12H2,1H3/t16-/m0/s1
